wsm L503 Workshop Manual page 58

L3130 · L3430 · L3830 · L4630 · L5030, WSM
Checking Refrigerant (Gas)
CAUTION
• Liquid contact with eyes or skin may cause frostbite.
• In the event of a leakage, wear safety goggles. Escaping
refrigerant can cause severe injuries to eyes.
• In contact with a flame, R134a refrigerant gives a toxic gas.
• Do not disconnect any part of the refrigeration circuit of the
air conditioning system.
A shortage of refrigerant impairs the air-conditioner performance.
Check the following points. If it is indicated that the amount of
refrigerant is extremely low, inspect and charge. (See page 10-
S21.)
Checking Procedure
1. Run the air-conditioner in the following conditions.
- Engine speed : About 1500 min
- Temperature control lever : Maximum cooling position
- Fan switch : Highest blow (HI)
- Air-conditioner switch : ON
2. Look into the sight glass (1) to see if the refrigerant is flowing
through its circuit.
IMPORTANT
• Charge only with R134a not R12 refrigerant (gas).
(1) Sight Glass
G-38
G GENERAL
-1
(rpm)
(leftmost)
(A) Proper : Little or no air bubbles in
the refrigerant flow.
(B) Low : Lots of air bubbles in the
refrigerant flow (air bubbles or
foam passing continuously).
(C) Overfull or no refrigerant :
Colorless and transparent.
W1120282
KiSC issued 02, 2007 A